Trying to sign up for GoTalk Voip (Australia) from Canada, n

Im trying to set up a Voip Account with GoTalk (www.gotalk.com.au) to use with our Asterisk server.

Basically we want to have an australian phone number coming in and out of our office in Canada via voip.

The problem is that the GoTalk sign up page doesnt have the option to select a diffrent country, and the phone number provided on the site is an Australian Toll free number that we cant seem to dial from Canada. Weve even tried to dial it via 011 61 and the toll free number.

Does anyone know a number to contact them on that we can call from Canada? Or how to sign up online with them from Canada?

Any help would be appreciated.